What is the Contact Sync page for?

One golden record per supplier, built from every Xero organisation in the group and the bill-reading catalogue, with what each organisation holds beside it and what a push would change. Suppliers are the only contacts that can be pushed; CIS subcontractors, employees, agency and professional workers and customers are shown read-only. Nothing is written to Xero by itself: every push, create, archive, rename or merge is a person's click, confirmed with what changes in which organisation, and shown as done only when Xero has answered. You enter: A correction to a golden record by hand — name, email, VAT or UTR, phone, website, company number, address — in the drawer; a field you set is pinned and the rebuild leaves it alone; Which organisations to push a contact to, and whether to create it where it does not exist yet (per row, for a selection, or from the drawer); A bank-detail decision on the Bank details tab: Approve the pair the paperwork supports, or correct a wrong pair; bank details are withheld from every push until an Admin has approved them; Decisions on the review tabs: confirm or change a verdict on Who is who, approve or refuse each proposed Xero change, keep a duplicate family apart, keep a dead contact. Saral fills: The golden records themselves, rebuilt from the sources after every edit, merge and fan-out (Full rebuild is the backstop), with a segment per record — supplier, CIS, employee, agency or professional, customer — so a CIS contact can never be pushed; Per record: completeness, the gaps, which organisations hold it and which do not, which fields differ from Xero, and the before-and-after a push would write; The bank queue in money-at-risk order: whether the pair on record agrees with the newest scanned invoice, whether it can exist at all, and the bill that carries each number; Nightly: the duplicate families, the contacts with nothing posted behind them in Saral or in Xero, and the research verdicts on Who is who — each a proposal, never a change. It produces: Updated contacts in the organisations you push to — email, phone, address, VAT number, name, bank details once approved — and new contacts where you chose to create them; An Excel workbook of every contact in every connected organisation, downloaded or emailed; A push history per record with an undo, and the approvals that archive dead contacts and confirm merges done in Xero. Where the settings live: The Xero organisations compared here are Settings → Data & integrations → Xero sync & coverage. The supplier catalogue that feeds the golden records, and its coding defaults, is BillScan → Suppliers; the gate that every new contact passes before it is created, and the nightly sweeps for dead contacts and duplicate families, run by themselves. Pushing follows the page’s own Accounts key, enforced again on the server; the bank reveal, bank approval and a bank correction are Admin only. The old Reference data register of contacts is Settings → Reference data.